When Crong scribbles all over the house, Pororo gets angry and tells him off. Whilst Pororo goes to the bathroom, Crong makes a mess again. Pororo decides to pretend he's sick to teach Crong a lesson. Crong gets worried about Pororo and brings a doctor, who says Pororo needs an injection. Pororo gets scared and hides in the bathroom and runs away. Will Pororo apologize?